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The Heart2
| Question | Answer |
|---|---|
| The two upper chambers of the heart | atria |
| carries blood from the lower body | inferior vena cava |
| carries blood from the head and upper extremities | superior vena cava |
| largest vein that drains the heeart | coronary sinus |
| the right and left rides of the heart are sepreated by an internal call of connective tissue | septum |
| seperates the right and left atria | interatrial septum |
| two lower chambers of the heart | ventricules |
| where is the base of the heart | top of the heart |
| encircles the outside of the heart and seperates the atria from the venticles | sulci |
| when the left heart is to recieve oxygenated blood and pump it out to the rest of the body | systematic circulation |
| the right side of the heart is to pump unoxygenated blood to | pulmonary circulation |
| which part of the heart is a high pressure pump? | left side |
| addictional contribution of 30% blood resulting from atrial contraction | Atrial kick |
| the amount of blood ejected from the venticle with each heartbeat. | stroke volume |
| the percent of blood pumped out of a heart chamber with each contraction. normal is 50% | ejection fraction |
| is a thin smooth layer of epithelium and connective tissue that lines the hearts inner chamber valves, chordae tendineae, and papillary muscles. | Endocardium |
| is a thick layer that consists of cardiac muscle fibers (cells) responsible for the pumping action of the heart | myocardium |
| is a double-walled sac that encloses the heart and helps protect it from trauma and infection | pericardium |
| life threatening condidtion | cardiac tamponade |
| a procedure in which a needle is inserted into the pericardial space and the excess fluid is sucked out (aspirated) through the needle | pericardiocentesis |
| a membrane that covers smooth, stirated, and cardiac muscles | sarcolema |
| energy -producing elements of a cell | mitochondria |
| substances in intracardiac cells pass through broken cell membranes and leak into the blood stream | MI (myocardial infraction_ |
| cardiac markers | tropin, creatine kinase, and myoglobin |
| seperate the atria from the ventricles | antriventricular valves |
| has two cusps, it lies between the left atrium and left venticle | mitral valves |
| is the av valve that lies between the right strium and right ventricle (3 seperate cusps or flaps) | tricuspid valve |
| are thin strands of connective tissues | chordae tendinae |
| they are the pulmonic and aortic valves, that prevent back flow of blood from the aorta and pulmonary arteries into the ventricles | semilunar valves (sl) |
| if a valve narrows, stiffens or thckens, the valve is said to be stenosed. the heart must work harder to pump blood through the stenosed valve | valvular stenosis |
| if a valve flap inverts it is said to prolaps | valvular prolapse |
| when does a heart sound occur? | because of vibrations in the tissues of the heart caused by the closing of the heats valve |
| what are normal heart sounds called? | s1 and s2 |
| name the 1st heart sound | "lubb" |
| name the 2nd heart sound | "dubb" |
| what is an abnormal heart sound called? |
Created by:
Tinkerbell_xoxo
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